2009 RZR S 800 Won’t move

After hearing a pop sound kind of like a broken axle while I was in a mud hole, the rzr won’t do anything even in park. It’s like being in neutral. I took the belt cover off and everything seems to be working fine. There was no grinding or strange noises after this happened.

The only thing I could find on the interstate similar to this was Rzr won’t move in any gear!!!!

I don’t have any time right now to work on it so I just cleaned it and put it away.

Anyone have any other ideas?